Merging r366545:

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r366545 | kadircet | 2019-07-19 11:08:22 +0200 (Fri, 19 Jul 2019) | 17 lines

[clangd] Handle windows line endings in QueryDriver

Summary:
The previous patch did not fix the end mark. D64789
fixes second case of https://github.com/clangd/clangd/issues/93

Patch by @lh123 !

Reviewers: sammccall, kadircet

Reviewed By: kadircet

Subscribers: MaskRay, ilya-biryukov, jkorous, arphaman, cfe-commits

Tags: #clang-tools-extra, #clang

Differential Revision: https://reviews.llvm.org/D64970
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llvm-svn: 367571